Agree it looks wilted, so might be getting too much hot sun and/or too little water for a new planting. It also looks like your soil is hard clay, which very few plants will tolerate. Working in lots of compost will help with all your growing. I recommend checking out Annie’s Annuals and Perennials website (link below) for good tips on how to amend your soil. Link to Annie’s gardening guides

This is a lovely room! In a small space continuity is important. Before you add or paint anything else, paint the daybed and both chairs a dark brown, British Colonial as mentioned above. This way you can add the color you want here and there. The table in front of the daybed needs to be higher, like a tea table height. Use the chest on the side. To make the daybed more comfy, add old fashioned wedge pillows across the back and then the big pillows on top. They are the best support and you won't even see them. https://www.amazon.com/Bolster-Replacement-Insert-Cushion-Perfect/dp/B011CZWYT6/ref=sr_1_3?ie=UTF8&qid=1542001435&sr=8-3&keywords=wedge+daybed+pillow&dpID=41J6VtPqM6L&preST=SY300_QL70&dpSrc=srch

I like your house color as it is; very craftsman-like. I do think the garage doors should be painted so that they do not stand out and call attention to themselves. I think your front porch is lovely and should be where our eyes want to go. I definitely agree with Patricia...white is not a good choice for this home.

Looks like large pavers. We live in wet winter country - PNW so moss etc is a routine thing here. We use the product Wet and Forget on our smaller pavers which works on moss & grime pretty well. Not all moss is green - it’s black mold looking too. Wet & Forget comes in concentrate or a sprayer container. Needs to be put down when pavers are dry & be able to stay wet for @ hour - so no spraying in sun or heat. Rain comes & washes black away & moss dies so it’s not immediate result but is seen working after the first rain. Not sure how successful this would be in less rainy climate. We buy it at Costco - product is popular here. We did pressure wash our pavers once using a round attachment that gives a much softer wash than the angled hard spray of the angled spray point of pressure washing. We were afraid the pressure washer would lift all the sand filler between the paver joints. ETA: we’ve never sealed our pavers but it is done by some. Need to clean first & I think it’s not permanent so must be redone every few years.